„Komasan in der großen Stadt: Hier kommt Komajiro!“ Das einsame Leben des Landeis Komasan wendet sich, als er seinen kleinen Bruder Komajiro trifft, der alles über das Leben in der großen Stadt lernen will.
„Yo-kai Winzikado“ Freddys neue Wünschelruten-App schickt die Freunde auf eine Schatzsuche, aber stattdessen findet Nathan den schlummernden Yo-kai Winzikado.
„Robonyan aktiviert!“ Ein mysteriöser, nächtlicher Besucher, entpuppt sich als Robonyan, ein Roboter Yo-kai aus der Zukunft, der Jibanyan zum Verwechseln ähnlich sieht.
Part 1: Komasan returns to the city, writing a letter to his mother about his adventures with his younger brother Komajiro has followed him. Komajiro is much more brave and interested in the city than Komasan, as obvious when he gets on an escalator while Komasan is still trying to get the timing right.
Part 2: Kanchi introduces the group to a new dousing mobile app that lets you hunt for treasure. They hunt all day but turn up nothing. As Kanchi and Kuma leave, Whisper tells Keita to scan for a Yo-Kai in the last hole they dug, discovering something. Whisper says it is just a cicada, but Keita is unsure as it is very large and oddly colored. As they argue, the "cicada" wakes up, revealing himself to be the Yo-Kai Semimaru. Whisper tries to explain his mistake, but Semimaru insists he is a Yo-Kai. He reveals that when a cicada dies after its one week in its adult stage, it transforms into Semimaru, but Semimaru only ever just wants to turn back into a cicada once more, burying itself, because if it leaves the ground again it will never become a cicada again. Keita reminds him he is above ground, and Semimaru freaks out. Whisper tries to look up ways to extend the life on Yo-Kai UkiUkipedia, but the countdown does not end. Instead, Semimaru tries to live life to its fullest. The week ends, and Semimaru gives Keita his Yo-Kai Medal, and as the countdown finally ends, he falls down. However, he is just asleep. Whisper has read Yo-Kai UkiUkipedia wrong, and Keita is upset that he has been stressed out over nothing.
Part 3: Keita watches a sci-fi movie on TV, telling Whisper that Yo-Kai are not in the movie but robots. Jibanyan wonders if there are robotic Yo-Kai, but Keita reveals that the movie takes place in the future, so they would probably not exist. Jibanyan feels robot Yo-Kai would be nice, so they could have friends forever. Outside, a robotic cat spies on the three. Later, Jibanyan is woken from his sleep by this robotic cat, asking Keita to look for him,
Nate e i suoi amici fanno una caccia al tesoro. / Un misterioso visitatore si rivela essere un gatto robot Yo-kai venuto dal futuro. / Arriva il fratello di Komasan.
O irmão mais novo de Komasan, Komacão, chega à cidade. Depois de uma caça ao tesouro fracassada, Nate e Whisper conhecem a cigarra Yo-kai Besourinja, que logo percebe que morrerá dentro de uma semana porque não foi autorizado a reencarnar como uma cigarra. Mais tarde, Nate e seus companheiros Yo-kai conhecem Robonyan, o robô de Jibanyan do futuro.
